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2014/10/15 ¤U¤È 10:10:39
iphone Programming Glossary: ismainthreadNSManagedObjectContext performBlockAndWait: doesn't execute on background thread? http://stackoverflow.com/questions/11831946/nsmanagedobjectcontext-performblockandwait-doesnt-execute-on-background-thread a background thread. I have the following code void testThreading ok self.backgroundMOC performBlock ^ assert NSThread isMainThread CRASH self.backgroundMOC performBlockAndWait ^ assert NSThread isMainThread Why does calling performBlockAndWait execute.. performBlock ^ assert NSThread isMainThread CRASH self.backgroundMOC performBlockAndWait ^ assert NSThread isMainThread Why does calling performBlockAndWait execute the task on the main thread rather than background thread iphone objective..
core data update in background http://stackoverflow.com/questions/15269768/core-data-update-in-background @ ReloadAppDelegateTable object nil context release and in getDataFromFile when I try to fetch data if NSThread isMainThread NSEntityDescription entity NSEntityDescription entityForName @ LogDetails inManagedObjectContext self.backgroundManagedObjectContext..
NSURLConnection doesn't call delegate methods http://stackoverflow.com/questions/3319943/nsurlconnection-doesnt-call-delegate-methods
Generic approach to NSManagedObjectContext in multi-threaded application http://stackoverflow.com/questions/3474960/generic-approach-to-nsmanagedobjectcontext-in-multi-threaded-application delegate NSManagedObjectContext moc delegate.managedObjectContext NSThread thread NSThread currentThread if thread isMainThread return moc a key to cache the context for the given thread NSString threadKey NSString stringWithFormat @ p thread delegate.managedObjectContexts.. for this thread NSManagedObjectContext moc self managedObjectContext NSThread thread NSThread currentThread if thread isMainThread NO only observe notifications other than the main thread NSNotificationCenter defaultCenter addObserver self selector.. name NSManagedObjectContextDidSaveNotification object moc NSError error if moc save error fail if thread isMainThread NO NSNotificationCenter defaultCenter removeObserver self name NSManagedObjectContextDidSaveNotification object moc..
Check whether or not the current thread is the main thread http://stackoverflow.com/questions/3546539/check-whether-or-not-the-current-thread-is-the-main-thread
Cocoa thread synchronisation when using [ALAssetsLibrary enumerateGroupsWithTypes:] http://stackoverflow.com/questions/3586911/cocoa-thread-synchronisation-when-using-alassetslibrary-enumerategroupswithtype try this library enumerateGroupsWithTypes ALAssetsGroupAll usingBlock ^ ALAssetsGroup group BOOL stop if NSThread isMainThread NSLog @ main else NSLog @ non main copy failureBlock ^ NSError err NSLog @ Erorr @ err localizedDescription.. @ non main copy failureBlock ^ NSError err NSLog @ Erorr @ err localizedDescription library release if NSThread isMainThread NSLog @ main else NSLog @ non main My output from this was main main main Meaning that the block was being called in the..
Subclassing NSOperation to be concurrent and cancellable http://stackoverflow.com/questions/3859631/subclassing-nsoperation-to-be-concurrent-and-cancellable @synthesize isCancelled _isCancelled BOOL isConcurrent return YES void start WHY SHOULD I PUT THIS if NSThread isMainThread self performSelectorOnMainThread @selector start withObject nil waitUntilDone NO return self willChangeValueForKey @ isExecuting..
What causes “Missed Method” in this code? http://stackoverflow.com/questions/6323244/what-causes-missed-method-in-this-code leaderboards part 2 This is the code void callDelegate SEL selector withArg id arg error NSError err assert NSThread isMainThread if delegate respondsToSelector selector if arg NULL delegate performSelector selector withObject arg withObject err else..
Objective-C: Asynchronously populate UITableView - how to do this? http://stackoverflow.com/questions/7491517/objective-c-asynchronously-populate-uitableview-how-to-do-this 2. Update the UITableViewDataSource with the new data Note We MIGHT be on a background thread here. if NSThread isMainThread self tableView reloadData else dispatch_sync dispatch_get_main_queue ^ self tableView reloadData And done. A few more lines..
http://stackoverflow.com/questions/7807977/ios-5-core-data-freeze
iPhone 4 is there an absolutely certain way to have a long term NSTimer fire http://stackoverflow.com/questions/8449351/iphone-4-is-there-an-absolutely-certain-way-to-have-a-long-term-nstimer-fire shouldRepeat void ^scheduler ^ NSRunLoop currentRunLoop addTimer timer forMode NSRunLoopCommonModes if NSThread isMainThread scheduler else you should really be able to rely on the fact that the timer is ready to roll when this method returns dispatch_sync.. mainQueue dispatch_get_main_queue if returnsImmediately dispatch_async mainQueue invalidator return if NSThread isMainThread dispatch_sync mainQueue invalidator return invalidator Note the thread checks before using dispatch_sync because... dispatch_sync..
UIWebView in multithread ViewController http://stackoverflow.com/questions/945082/uiwebview-in-multithread-viewcontroller . I found this as my ideal solution placing this code into my view controller class oneway void release if NSThread isMainThread self performSelectorOnMainThread @selector release withObject nil waitUntilDone NO else super release This ensures that..
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